Finding the Fourth Proportional to 13,350.72, 18,417.86 and 8,636.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,350.72 : 18,417.86 = 8,636.52 : x
2. Step 2: Convert to fraction form
   13,350.72/18,417.86 = 8,636.52/x
3. Step 3: Cross multiply
   13,350.72x = 18,417.86 × 8,636.52
4. Step 4: Simplify right side
   13,350.72x = 159,066,216.25
5. Step 5: Solve for x
   x = 159,066,216.25/13,350.72
6. Step 6: Final answer
   x = 11,914.43